99 E300 TD cuts out Ph 5 <=== M.B. DOC pls.

[TMAllison]

Continuing woe's from four prior posts last 5 or 6 weeks.

Got car back from local dealer 7 days ago and have put 750 uneventful quite enjoyable miles on car; my first since purchasing two months ago.

I like. Alot!!!

Today got MIL. Fluids, belt, temp etc. fine. After checking, on second start had glow plug indicator light stay on maybe 5 seconds then went out.

The MIL code is "P0380 Glow Plug: Heater circuit Malfunction".

No apparent fuel leak at fuel thermostat or fuel line or elsewhere on or around IP; I've cleaned everything up to extent I am virtually certain of this.

Question: Recent work by Indie, Me & Dealer (750 miles ago) included replacing glow plugs, all fuel lines; fuel filter, pre-filter and o ring; fuel relay module, fuel shutoff solenoid (P0215 & P0180) AND finally engine wiring harness and a few other lessor items). Is it possible P0380 comes from a bad electrical connection to one of the glow plugs from when the harness was replaced? They seem to be clipped in place but is hard to see (STUPID MANIFOLD!!!).

Any harm in driving 3 cycles to see if MIL will go out?

Dealer recommended replacing oil sender unit in future because of minor leak and trans shifter bushings. Everything else looked good.

As always, thoughts greatly appreciated.